Liquid phase sintering of Re2O3YSZ ceramics:: Part II -: Grain boundary electrical properties

被引：11

作者：

De Souza, MF

De Souza, DPF

机构：

[1] Univ Sao Paulo, Dept Phys, BR-13560970 S Carlos, SP, Brazil

[2] Univ Fed Sao Carlos, Dept Mat Engn, BR-13565905 S Carlos, SP, Brazil

来源：

JOURNAL OF MATERIALS SCIENCE | 1999年 / 34卷 / 24期

基金：

巴西圣保罗研究基金会;

关键词：

D O I：

10.1023/A:1004765719636

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Grain boundary electrical properties of Y2O3 stabilised zirconia with small additions of Er2O3 and Pr2O3 sintered via silicate liquid phase were studied by the impedance spectroscopy technique. Grain boundary specific conductivity of the praseodymium doped samples was found to be independent of sintering time, while the erbium doped sample showed high anomalous conductivity for the 1.0 h sintered samples. The electrical behaviour is explained considering the grain boundary to be a series association of the glass film and the space charge region. Specific conductivity and Debye length of the space charge region of erbium doped samples were found to be 6.7 x 10(-8) S/cm and 0.25 nm, respectively. (C) 1999 Kluwer Academic Publishers.

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页码：6107 / 6114

页数：8

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